How to change font and size of post/page titles in Chateau?

I have made a lot of changes to Chateau and am pleased with what I have, except for the legacy Garamond Italic post (page) headings that are very, very big and look wrong with the body text-- and they're on the top of every page, of course, in a very big box of their own. I found that I can change the post-title text color in this piece of code from the original:

.post-title h2 {
border-bottom:1px solid #ddd;
color:#006699;
font-size:1em;
font-style:none;
font-weight:normal;
padding:6px 0 16px 24.5%;
}
I have also changed or tried to override "Garamond" wherever I see it in Chateau's original CSS, but nothing I have done has changed that font or its size in the page titles. I know next to nothing about CSS/Html, but some things I've done have worked very well-- not this though. I would really like those page titles to be in the same font as the body text, which I changed to Arial, and only about three times as big as the current body text size, but in Bold. I would also need to change the size of the page title division, which ought to be smaller, and that would happen somewhere else, I think. Hope you can help me work this out!

One way to find out what current settings such as title fonts are being set is by checking the original theme stylesheet using the Appearance → Custom Design → CSS → "View the original stylesheet" link.

This is great, I tried the code given in post-701722 and it works! Titles are still in Garamond apparently, but much neater. I'll live with this a while and change to Arial if I feel the need. Thanks timethief and designsimply!

I looked at your Appearance → Custom Design → CSS page and I can't find any place you set the "font-family" rule at all for ".post-title h1" or ".post-title h2". Are you sure you added the CSS I recommended and that you saved the changes?

I didn't use your code yet to change the font family, but will if I want to change post titles to Arial. I already did that for the body text, somewhere up in my own CSS Stylesheet Edit page, to override the original code, as I understand it does-- that worked fine but only for body. This changing the size only looks good so far. Thank you!

Ah, I see. I thought you were trying to change the post titles to Arial and you tried to update it but it didn't work for you. If you're just changing other font properties, that makes sense and you should be good to go. Cheers. :)